<?php
namespace TYPO3\CMS\Extbase\Validation\Validator;

/**
 * This file is part of the TYPO3 CMS project.
 *
 * It is free software; you can redistribute it and/or modify it under
 * the terms of the GNU General Public License, either version 2
 * of the License, or any later version.
 *
 * For the full copyright and license information, please read the
 * LICENSE.txt file that was distributed with this source code.
 *
 * The TYPO3 project - inspiring people to share!
 */

/**
 * Validator for not empty values.
 *
 * @api
 */
class NotEmptyValidator extends AbstractValidator {

	/**
	 * This validator always needs to be executed even if the given value is empty.
	 * See AbstractValidator::validate()
	 *
	 * @var boolean
	 */
	protected $acceptsEmptyValues = FALSE;

	/**
	 * Checks if the given property ($propertyValue) is not empty (NULL, empty string, empty array or empty object).
	 *
	 * If at least one error occurred, the result is FALSE.
	 *
	 * @param mixed $value The value that should be validated
	 * @return boolean TRUE if the value is valid, FALSE if an error occurred
	 */
	public function isValid($value) {
		if ($value === NULL) {
			$this->addError(
				$this->translateErrorMessage(
					'validator.notempty.null',
					'extbase'
				), 1221560910);
		}
		if ($value === '') {
			$this->addError(
				$this->translateErrorMessage(
					'validator.notempty.empty',
					'extbase'
				), 1221560718);
		}
		if (is_array($value) && empty($value)) {
			$this->addError(
				$this->translateErrorMessage(
					'validator.notempty.empty',
					'extbase'
				), 1347992400);
		}
		if (is_object($value) && $value instanceof \Countable && $value->count() === 0) {
			$this->addError(
				$this->translateErrorMessage(
					'validator.notempty.empty',
					'extbase'
				), 1347992453);
		}
	}
}
